Big Twin Flathead / Knucklehead / Panhead
The Gasbox 1930 Twin Tube Mufflers
The GasBox 1934 Upsweep Mufflers
The GasBox 1939 CHP Upsweep Mufflers
The GasBox Fishtail Mufflers
The GasBox Fishtail Seamed Mufflers
The GasBox Rocket Fin Seamed Mufflers
Cigar Style Mufflers
Rocket Fishtail Mufflers
Original replacement mufflers for Knucklehead, Panhead and Big Twin Flathead
The big twins with OHV and SV engines have a pipe diameter of 1-3/4 " and used the same mufflers from 1937 onwards. Our original replacement silencers fit all the models mentioned, even though each model and year group always had its own style. In addition to use them as accurate original replacements, custom applications are also conceivable by mixing different model years and types. The manufacturer of our detailed quality reproductions is mainly The GasBox, a company that has earned an excellent reputation.
Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com